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skad [1K]
3 years ago
15

Find the reference angle for -7pi/9

Mathematics
1 answer:
vovangra [49]3 years ago
3 0

Answer:

0° to 90°: reference angle = angle ,

90° to 180°: reference angle = 180° - angle ,

180° to 270°: reference angle = angle - 180° ,

270° to 360°: reference angle = 360° - angle .

Step-by-step explanation:

you can use them all but only one matches

your problem

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If Lisa earns $45 in 7.5 hours, find her unit rate in dollars per hour.
MakcuM [25]

Answer: lisa earns 6 dollars per hour

Step-by-step explanation:

45 divided by 7.5 =6

5 0
3 years ago
Read 2 more answers
The Z-score is based on the concept of the normal distribution, the fact that we can expect 95% of the values in the distributio
Dennis_Churaev [7]

Answer:

C.) In perfect health.

Step-by-step explanation:

Given an average weight of 15kg and a standard deviation of 3kg for children of 4 years. Since the weight is based on a normal Z - distribution of 95% which is mean ± 2(standard deviations)

Mean weight interval is :

15 - 2(3) ; 15 + 2(3)

(9 ; 21) ; this weight interval could be interpreted to mean the normal or perfect weight value.

Therefore, given that the child weighs 12kg

Since, 12 kg falls within in the interval, we can conclude that the child is in perfect health.

7 0
3 years ago
Ike's igloo sold 501 ice cream cones today.They sold half as many chocolate ice cream cone as vanilla ones. How many of each wer
34kurt

Answer:

Chocolate cones = x = 167 cones

Vanilla cones = y = 334 cones

Step-by-step explanation:

Let

The number of Chocolate cones = x

Vanilla cones = y

Ike's igloo sold 501 ice cream cones today.

x + y = 501.... Equation 1

They sold half as many chocolate ice cream cone as vanilla ones.

x = 1/2y

x = y/2

Cross multiply

y = 2x

We substitute 2x for y in Equation 1

x + 2x = 501

3x = 501

x = 501/3

x = 167

Solving for y

y = 2x

y = 2 × 167

y = 334

Therefore,

The number of

Chocolate cones = x = 167 cones

Vanilla cones = y = 334 cones

4 0
3 years ago
Solve for the volume of the following figure.
Olenka [21]

Answer:

96\pi \: or \: 301.59

rounded to the nearest hundredth

Step-by-step explanation:

use the pythagorean theorem to find the height of the cone

{a}^{2}  +  {6}^{2}  =  {10}^{2}

you get a = 8

the formula for the volume of a cone is

\pi \:{r}^{2}  \frac{h}{3}

plug in 6 for the radius and 8 for the height. then solve

5 0
3 years ago
*PLEASE HELP ME ANSWER THIS, ILL GIVE BRAINLIEST!!!*<br> [ ATTACHMENTS ARE BELOW ]
klasskru [66]

Answer:

Step-by-step explanation:

4) y + 3 / 5 + 3 = x + 2 / 2 + 2

=> y + 3 / 8 = x + 2 / 4

=><u><em> y + 3 = 2(x + 2)</em></u>

<u><em></em></u>

5) y - 2 / -1 - 2 = x + 4 / 4 + 4

=> y - 2 / -3 = x + 4 / 8

=><u><em> </em></u><u><em>y - 2 = -3/8(x + 4)</em></u>

7 0
2 years ago
Read 2 more answers
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